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http://dx.doi.org/10.13104/jksmrm.2014.18.3.225

Biceps Femoris Tendon and Lateral Collateral Ligament: Analysis of Insertion Pattern Using MRI  

Shin, Yun Kyung (Department of Radiology, Kyung Hee University Hospital, Kyung Hee University)
Ryu, Kyung Nam (Department of Radiology, Kyung Hee University Hospital)
Park, Ji Seon (Department of Radiology, Kyung Hee University Hospital)
Lee, Jung Eun (Department of Radiology, Kyung Hee University Hospital)
Jin, Wook (Department of Radiology, Kyung Hee University Hospital at Gandong)
Park, So Young (Department of Radiology, Kyung Hee University Hospital at Gandong)
Yoon, So Hee (Department of Radiology, Kyung Hee University Hospital at Gandong)
Lee, Kyung Ryeol (Department of Radiology, Jeju National University Hospital)
Publication Information
Investigative Magnetic Resonance Imaging / v.18, no.3, 2014 , pp. 225-231 More about this Journal
Abstract
Purpose : The biceps femoris tendon (BFT) and lateral collateral ligament (LCL) in the knee were formerly known to form a conjoined tendon at the fibular attachment site. However, the BFT and LCL are attached into the fibular head in various patterns. We classified insertion patterns of the BFT and LCL using MR imaging, and analyzed whether the LCL attaches to the fibular head or not. Materials and Methods: A total of 494 consecutive knee MRIs of 470 patients taken between July 2012 and December 2012 were retrospectively reviewed. There were 224 males and 246 females, and patient age varied from 10 to 88 (mean, 48.6). The exclusion criteria were previous surgery and poor image quality. Using 3T fat-suppressed proton density-weighted axial images, the fibular insertion patterns of the BFT and LCL were classified into following types: type I (the LCL passes between the anterior arm and direct arm of the BFT's long head), type II (the LCL joins with anterior arm of the long head of the BFT), type III (the BFT and LCL join to form a conjoined tendon), type IV (the LCL passes laterally around the anterior margin of the BFT), and type V (the LCL passes posteriorly to the direct arm of the BFT's long head). Results: Among the 494 cases of the knee MRI, there were 433 (87.65%) type I cases, 21 (4.25%) type II cases, 2 (0.4%) type III cases, 16 (3.23%) type IV cases, and 22 (4.45%) type V cases. There were 26 cases (5.26%) in which the LCL and BFT were not attached into the fibular head. Conclusion: The fibular attachment pattern of the BFT and LCL shows diverse types in MR imaging. The LCL does not adhere to the head in some patients.
Keywords
Biceps femoris tendon; Lateral collateral ligament; Conjoined tendon; Fibular insertion;
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